Помогите пж............

Question

Помогите пж............

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Comments

задача№90?

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да

Answer 1

X + 3x + 5= 17
4x= 17 -5
4x = 12
x = 3

Answer 2

10к-0,83=10*0,83-0,83=7,47
10к-0,83=10*8,3-0,83=82,17
10к-0,83=10*0,083-0,83=0

Comments

спс

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пж)))